Git Model and Objects

Use this page when the basic Git model still feels fuzzy.

Core Ideas

• Git stores snapshots, not only line-by-line deltas
• the repository, index, and working tree are different layers
• a branch is a movable reference to a commit
• HEAD usually points to your current branch

Best Local Sources

• Git from the Bottom Up chunk 001
• Git from the Bottom Up chunk 002
• Git from the Bottom Up chunk 003
• Pro Git chunk 005
• Pro Git chunk 006